Marantz SLT 12 Brochure

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The Model BLT-120 Straight Line Tracking Turntable. Reproducing the total signal and achieving maximum channel separa-
tion has always been a problem with conventional tracking tone arms since the introduction of stereo discs. Marantz has

solved this problem with the new SLT- 12U Universal Cartridge Straight Line Tracking Turntable. After the original recording
is taped, it is necessary to create from it a master disc, which is used to mass manufacture the discs you purchase. This stereo
master disc is cut with a special lathe, which is controlled by signals from the original tape recording. The cutting head of
this lathe travels across the master disc in a straight line, and the grooves are cut proportionately to the volume of the sound
fed to it from the tape; as the sound ebbs. the grooves narrow-as the sound swells, they become wider. Thus, both the
width of the grooves (shown highly-magnified below) and their depth (pictured below) vary proportionately with the
amount of sound fed by the tape, and also with the higher and lower frequencies of the sound. Each side of the groove
carries a separate signal -one for each channel. it is the two sides of each groove together that comprise the total stereo signal
being recorded. The grooves of the master reproduction disc-and those of all discs subsequently pressed from the master-
carry the total sound originally recorded. In order to reproduce the total sound originally recorded. the playback tone-arm and
cartridge must duplicate exactly the straight line path of the cutting head and the angle of the cutting stylus. This is exactly
what the Marantz SLT-IZU tone-arm does. It tracks across the disc in a straight line. following the path originally taken by the
master disc cutting head-as you can easily see in the multiple-exposure photo below. A conventional tone»arm creates an
arc in its travel across the disc; because there is no arc created, the cartridge stylus mounted in the SLT-lZU arm cannot twist
in the groove. lts angle exactly duplicates the angle of the cutting stylus, remaining always tangent to, and precisely seated
in, the groove. To our knowledge, it is the only disc playback system which can and does exactly reproduce the total dynamics
and full stereo separation of the total sound that was originally recorded. There are certain deficiencies which are inherent in
conventional tone-arm tracking. Many manufacturers have devised ingenious methods to combat some of these deficiencies.
but they are compromises at best. These deficiencies do not exist in the Marantz Straight Line Tracking Turntable. Marantz
has perfected a trouble-free tracking and tone-arm assembly. With the magnificent Marantz SLT-lZU disc playback system
there is: no tracking error; no inner-groove distortion; no skating impulse; no deterioration of the elliptical stylus shape;
absolutely uniform stereo separation and frequency response, from outermost to innermost grooves. The Marantz SLT-IZ
will accommodate virtually all existing, current or future cartridge weighing up to 10 grams (most current cartridges weigh
five grams or less) and up to 3;" height from the top of the cartridge to the stylus tip (most current cartridges are only 50%
of this height). Installation is non-technical, and can be performed easily. To make universal cartridge selection possible, the
SLT-llU tone-arm is equipped with a unique positive balancing device that permits simple balancing for any of the popular
cartridges. The Marantz SLT-lZU is not just a theory in practice- it is a proven product and it creates a truly great experience
in musical enjoyment. $295.00.

thrust bearing, and precision groove-track, eliminating synchronous motor belt
FEATURES ground drive belt combine to accidental scratching and [uscothane belt) driving the
Zero Tracking Error- provide maximum isolation damaging of prized recordings. platter's outer rim.
Revolutionary straight line from acoustic feedback. SPECIFICATIONS Rumble _.\liflua"y nonfximm.
tracking arm 2, 53". ll Widest Dynamic Range- Speeds-33h: and 45 l<.l.M. l.eveling-- Precision bubble-level
:?:§:"LI::E:::05 ismrizrooire Marantz designed lightweight Flutter and Wow _ Better than adjustment.
" '0 55 0" produces [IN-5 0.04%. Dimensions and Weight - l8"

tracking error distortion. skating

{orcc and uneven my), wear- :fnngtgciflgztgs;:3Amk range. Tracking Error- Non-existent wide x l-t" deep x 6'52" high
all inherent in conventional (U degreestmch). 40de W-Ilnut base); 2/ lbs.
arm design. Cueing Control _ No need to Skating Porce- Non-existent POW" Requirements..- l2(l\-,
Rumble Free-12 lb. heavy- ever touch pick-up arm. lositive when '7'"de is properly 00 deg (50 "yd available).
weight precision-machined cueing control automatically ""ekd- Ul- 5-

turntablc, rung-ten carbide places arm in desired Drive Principle- Hysteresis Optional Accessory- Dust cover.